/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.rpc;

import org.apache.thrift.transport.TTransport;
import org.xerial.snappy.Snappy;

import java.io.IOException;

public class TSnappyElasticFramedTransport extends TCompressedElasticFramedTransport {

    public static class Factory extends TElasticFramedTransport.Factory {

        public Factory() {
            this(RpcUtils.THRIFT_DEFAULT_BUF_CAPACITY, RpcUtils.THRIFT_FRAME_MAX_SIZE);
        }

        public Factory(int thriftDefaultBufferSize) {
            this(thriftDefaultBufferSize, RpcUtils.THRIFT_FRAME_MAX_SIZE);
        }

        public Factory(int thriftDefaultBufferSize, int thriftMaxFrameSize) {
            super(thriftDefaultBufferSize, thriftMaxFrameSize);
        }

        @Override
        public TTransport getTransport(TTransport trans) {
            return new TSnappyElasticFramedTransport(trans, thriftDefaultBufferSize, thriftMaxFrameSize);
        }
    }

    public TSnappyElasticFramedTransport(TTransport underlying) {
        this(underlying, RpcUtils.THRIFT_DEFAULT_BUF_CAPACITY, RpcUtils.THRIFT_FRAME_MAX_SIZE);
    }

    public TSnappyElasticFramedTransport(
            TTransport underlying, int thriftDefaultBufferSize, int thriftMaxFrameSize) {
        super(underlying, thriftDefaultBufferSize, thriftMaxFrameSize);
    }

    @Override
    protected int uncompressedLength(byte[] buf, int off, int len) throws IOException {
        return Snappy.uncompressedLength(buf, off, len);
    }

    @Override
    protected int maxCompressedLength(int len) {
        return Snappy.maxCompressedLength(len);
    }

    @Override
    protected int compress(byte[] input, int inOff, int len, byte[] output, int outOff)
            throws IOException {
        return Snappy.compress(input, inOff, len, output, outOff);
    }

    @Override
    protected void uncompress(byte[] input, int inOff, int size, byte[] output, int outOff)
            throws IOException {
        Snappy.uncompress(input, inOff, size, output, outOff);
    }
}
